/Engine/Source/Runtime/SlateCore/Public/Input/HittestGrid.h
void DisplayGrid ( int32 InLayer, const [FGeometry](API\Runtime\SlateCore\Layout\FGeometry) & AllottedGeometry, [FSlateWindowElementList](API\Runtime\SlateCore\Rendering\FSlateWindowElementList) & WindowElementList, [EDisplayGridFlags](API\Runtime\SlateCore\Input\FHittestGrid\EDisplayGridFlags) DisplayFlags ) const